testability

Assess code testability by auditing modules against criteria like dependency injection, global state avoidance, pure functions, and observability gaps. This structured review reveals unit testing challenges and identifies specific areas needing refactoring to achieve reliable isolated tests.

Code is hard to unit test when it relies on global state, hidden filesystem access, uncontrolled time or randomness, and lacks dependency injection or test seams. These factors prevent isolated execution and create observability gaps during testing.

Identify test seams and global state issues by applying a structured testability audit across your modules, libraries, and services. This evaluates injection points, purity, and global state usage to pinpoint where refactoring is needed.

Yes, you can audit a module to identify the top testability gaps and recommended refactors. The assessment checks dependency injection, global state, purity, time, randomness, filesystem access, seams, and observability to guide improvements.

Yes, the testability assessment applies across modules, libraries, and services. It enforces consistent criteria including dependency injection, global state avoidance, and observable outputs to evaluate testing challenges.